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Create a 100MB file for testing transfer speed

Terminal - Create a 100MB file for testing transfer speed
dd if=/dev/random of=bigfile bs=1024 count=102400
2009-02-17 05:41:20
User: amiga500
Functions: dd
2
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Create a 100MB file for testing transfer speed
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Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

/dev/random is a blocking device that will block read when the entropy pool is empty. You should use /dev/urandom instead.

But even /dev/urandom is cpu intensive, wich is not a good idea if you are testing data transfer speed. A better alternative should be:

dd if=/dev/zero of=bigfile bs=1024 count=102400
Comment by berta 221 weeks and 6 days ago

This is only cpu intensive when you generate the file. After that there is no more overhead except for the bandwidth consumed.

I have a small shell script that compares the downloaded checksum with one done on the generated file, then prints the results (either checksums match or they don't).

Comment by meganerd 68 weeks and 6 days ago

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